Just to put in some perspective - your questions are like asking in an indycar racing forum, on how to change gears of your car...

The map software that comes with N810 is a trial version. Unless you are going to buy it, you dont need it. There are other free map software available.

The version you have 1.2007.42-19, is old. so you need to update it. Backup any files in your N810. Make sure your N810 battery is full.
Go to the page https://www.nokiausa.com/A4686323 and follow the instructions.

if you would like to see a video of this, check this link http://tabletschool.blogspot.com/200...-firmware.html